<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>demo</title>

    <style>
      .box {
        width: 1226px;
        height: 66px;
        background-color: yellow;
      }

      .box > a {
        /* display: block; */
        width: 100px;
        height: 22px;
        text-align: center;
        line-height: 22px;
        background-color: skyblue;
      }
    </style>
  </head>
  <body>

    <div class="box"><a href="#">哈哈</a></div>
  </body>
</html>
